3749801021 has 8 divisors (see below), whose sum is σ = 3924120384. Its totient is φ = 3576422080.

The previous prime is 3749800997. The next prime is 3749801051. The reversal of 3749801021 is 1201089473.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3749801021 - 2¹⁴ = 3749784637 is a prime.

It is a super-2 number, since 2×3749801021² = 28122015394185284882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3749801051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226940 + ... + 242901.

It is an arithmetic number, because the mean of its divisors is an integer number (490515048).

Almost surely, 2^3749801021 is an apocalyptic number.

It is an amenable number.

3749801021 is a deficient number, since it is larger than the sum of its proper divisors (174319363).

3749801021 is a wasteful number, since it uses less digits than its factorization.

3749801021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470211.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3749801021 is about 61235.6188912956. The cubic root of 3749801021 is about 1553.5887736457.

The spelling of 3749801021 in words is "three billion, seven hundred forty-nine million, eight hundred one thousand, twenty-one".